UISearchBar属性相关
_searchBar = [[UISearchBar alloc] initWithFrame:CGRectZero];// 初始化，不解释
[self.searchBar setPlaceholder:@"Search"];// 搜索框的占位符
[self.searchBar setPrompt:@"Prompt"];// 顶部提示文本,相当于控件的Title
[self.searchBar setBarStyle:UIBarMetricsDefault];// 搜索框样式
[self.searchBar setTintColor:[UIColor blackColor]];// 搜索框的颜色，当设置此属性时，barStyle将失效
[self.searchBar setTranslucent:YES];// 设置是否透明
[self.searchBar setBackgroundImage:[UIImage imageNamed:@"image0"]];// 设置背景图片
[self.searchBar setSearchFieldBackgroundImage:[UIImage imageNamed:@"image3"]forState:UIControlStateNormal];// 设置搜索框中文本框的背景
[self.searchBar setSearchFieldBackgroundImage:[UIImage imageNamed:@"image0"]forState:UIControlStateHighlighted];
[self.searchBar setSearchFieldBackgroundPositionAdjustment:UIOffsetMake(30,30)];// 设置搜索框中文本框的背景的偏移量
[self.searchBar setSearchResultsButtonSelected:NO];// 设置搜索结果按钮是否选中
[self.searchBar setShowsSearchResultsButton:YES];// 是否显示搜索结果按钮
[self.searchBar setSearchTextPositionAdjustment:UIOffsetMake(30, 0)];// 设置搜索框中文本框的文本偏移量
[self.searchBar setInputAccessoryView:_btnHide];// 提供一个遮盖视图
[self.searchBar setKeyboardType:UIKeyboardTypeEmailAddress];// 设置键盘样式
// 设置搜索框下边的分栏条
[self.searchBar setShowsScopeBar:YES];// 是否显示分栏条
[self.searchBar setScopeButtonTitles:[NSArrayarrayWithObjects:@"Singer",@"Song",@"Album", nil]];// 分栏条，栏目
[self.searchBar setScopeBarBackgroundImage:[UIImage imageNamed:@"image3"]];//分栏条的背景颜色
[self.searchBar setSelectedScopeButtonIndex:1];// 分栏条默认选中的按钮的下标
[self.searchBar setShowsBookmarkButton:YES];// 是否显示右侧的“书图标”
[self.searchBar setShowsCancelButton:YES];// 是否显示取消按钮
[self.searchBar setShowsCancelButton:YES animated:YES];
// 是否提供自动修正功能（这个方法一般都不用的）
[self.searchBar setSpellCheckingType:UITextSpellCheckingTypeYes];// 设置自动检查的类型
[self.searchBar setAutocorrectionType:UITextAutocorrectionTypeDefault];// 是否提供自动修正功能，一般设置为UITextAutocorrectionTypeDefault
self.searchBar.delegate = self;// 设置代理
[self.searchBar sizeToFit];
myTableView.contentInset =UIEdgeInsetsMake(CGRectGetHeight(self.searchBar.bounds), 0, 0, 0);
[self.view addSubview:myTableView];
[myTableView addSubview:self.searchBar];
设置输入框的颜色
UITextField *txfSearchField = [_searchBar valueForKey:@"_searchField"];//获取输入框
txfSearchField.backgroundColor = [UIColor redColor];
设置搜索栏icon大小
UISearchBarIcon UIImageView *searchIcon = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"yourSearchBarIconImage"]];
searchIcon.frame = CGRectMake(10, 10, 24, 24);
[searchBar addSubview:searchIcon];